const PickerData = '''
[
    {
        "a": [
            {
                "a1": [
                    1,
                    2,
                    3,
                    4
                ]
            },
            {
                "a2": [
                    5,
                    6,
                    7,
                    8,
                    555,
                    666,
                    999
                ]
            },
            {
                "a3": [
                    9,
                    10,
                    11,
                    12
                ]
            }
        ]
    },
    {
        "b": [
            {
                "b1": [
                    11,
                    22,
                    33,
                    44
                ]
            },
            {
                "b2": [
                    55,
                    66,
                    77,
                    88,
                    99,
                    1010,
                    1111,
                    1212,
                    1313,
                    1414,
                    1515,
                    1616
                ]
            },
            {
                "b3": [
                    1010,
                    1111,
                    1212,
                    1313,
                    1414,
                    1515,
                    1616
                ]
            }
        ]
    },
    {
        "c": [
            {
                "c1": [
                    "a",
                    "b",
                    "c"
                ]
            },
            {
                "c2": [
                    "aa",
                    "bb",
                    "cc"
                ]
            },
            {
                "c3": [
                    "aaa",
                    "bbb",
                    "ccc"
                ]
            },
            {
                "c4": [
                    "a1",
                    "b1",
                    "c1",
                    "d1"
                ]
            }
        ]
    }
]
    ''';

const PickerData2 = '''
[
    [
        1,
        2,
        3,
        4
    ],
    [
        11,
        22,
        33,
        44
    ],
    [
        "aaa",
        "bbb",
        "ccc"
    ]
]
    ''';